PLC Programming

Sampling Trace
'Load Values'
Be aware, that here you save the traced values as well as the trace configuration, whereas Save
trace in the configuration dialog only concerns the configuration data.
The saved Sampling Trace can be loaded again with 'Extras' 'Load Trace'.
With this command a saved Sampling Trace (traced values + configuration data) can be reloaded.
The dialog box for opening a file is opened. Select the desired file with the "*.trc" extension.
With 'Extras' 'Save Values' you can save a Sampling Trace.
'Trace in ASCII-File'
With this command you can save a Sampling Trace in an ASCII-file. The dialog box for saving a file is
opened. The file name receives the extension "*.txt". The values are deposited in the file according to
the following scheme:
CODESYS Trace
D:\CODESYS\PROJECTS\TRAFFICSIGNAL.PRO
Cycle PLC_PRG.COUNTER PLC_PRG.LIGHT1
0 2 1
1 2 1
2 2 1
.....
If no frequency scan was set in the trace configuration, then the cycle is located in the first column;
that means one value per cycle has been recorded at any given time. In the other respects, the entry
here is for the point in time in ms at which the values of the variables have been saved since the
Sampling Trace has been run.
In the subsequent columns, the corresponding values of the trace variables are saved. At any given
time the values are separated from one another by a blank space.
The appertaining variable names are displayed next to one another in the third line, according to the
sequence (PLC_PRG.COUNTER, PLC_PRG.LIGHT1).
6.9.3 'Extras' 'External Trace Configurations'
'Save to file'
'Load from file'
Use the commands of this menu to save or reload traces (configuration + trace values) in files resp.
from files, to load a trace from the controller to the project or to set a certain trace as that which should
be used in the project.
Note: Regard the alternative way of storing and reloading traces by using the commands of menu 'Extras' 'Save
Trace' (Projektformat, *.trc-Datei, ASCII) !
With this command a trace (configuration + values) can be saved in a file in XML format. For this
purpose the standard dialog for saving a file opens. Automatically the file extension *.mon will be
used.
A *.mon-file can be reloaded to a project with command 'Load from file'.
With this command a trace (configuration + values), which is available in a file in XML format (*.mon,
can be loaded into the project. The dialog for opening a file will open and you can browse for files with
extension *.mon. The loaded trace will be displayed and added to the selection list in field 'Trace in the
configuration dialog. If you want to set it as currently used project trace configuration, use command
'Set as project configuration'.
6-48 CoDeSys V2.3